Cita APA

Allan, B., Woods, P. 1., Clarke, S., Gregory, N. M., & Bates, M. (1993). Wild orchids of Scotland. Edinburgh: HMSO.

Citación estilo Chicago

Allan, Brian, Patrick 1932-2004 Woods, Sidney Clarke, Norma M. Gregory, y Mary Bates. Wild Orchids of Scotland. Edinburgh: HMSO, 1993.

Cita MLA

Allan, Brian, et al. Wild Orchids of Scotland. Edinburgh: HMSO, 1993.